Question

what is the correct answer ​

Answer 1

$option : (c) \: \: \{1,2,3,4,5,7,8 \}$

Step-by-step explanation:

$Given, \: \: T= \{1,2,3,4,5 \}, \: \: M= \{1,2,3,7,8 \} \\ then, \: \: \: T \cup M= \{1,2,3,4,5,7,8 \}\\T \cap M= \{1,2,3 \} \\ T-M= \{4,5 \}$